CN117835437A - Data transmission method and device - Google Patents
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- H—ELECTRICITY
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- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/08—Speed or phase control by synchronisation signals the synchronisation signals recurring cyclically
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- H—ELECTRICITY
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- H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
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Abstract
In the data transmission method, a terminal device receives first information from a network device; according to the first information, the terminal equipment determines M time windows used for data transmission in N time windows of a first period, and performs data transmission with the network equipment in Y time windows in the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M. It can be seen that the number of time windows for data transmission in the first period may be plural, and when the data in the first period arrives in advance of the expected time, the terminal device may receive or transmit the data in the preceding time window for data transmission; when the data delay arrives at the expected time, the terminal equipment can receive or send the data in a later time window for data transmission, which is beneficial to reducing the time delay of data transmission.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
Background
With the continuous development of communication technology, the data transmission delay is continuously reduced, the transmission capacity is larger and larger, and multimedia services with strong real-time performance and large data volume, such as video services, cloud game (Cloud game), eXtended Reality (XR) services, etc., may be transmitted between the network device and the terminal device.
The data in these services has the property of being periodically transmitted. Taking downlink transmission between the network device and the terminal device as an example, in an ideal case, the server periodically transmits data to the network device, and the data may periodically arrive at the network device, i.e., the data arrives at the network device at an expected time, then the network device may periodically transmit the data to the terminal device. However, due to server encoding processing, fixed network/core network transmission, etc., there may be jitter in the time at which data actually arrives at the network device compared to the expected time in each period, that is, the data may actually arrive at the network device in advance or may arrive at the network device later than the expected time. The case of uplink transmission between the network device and the terminal device is similar to the case of downlink transmission, and jitter may exist in data sent by the terminal device to the network device during uplink transmission.
In each cycle, if semi-persistent scheduling (SPS) or Configured Grant (CG) resources are configured before the expected time, the delay of transmitting data when the data arrives earlier than the expected time is smaller, but when the data arrives later than the expected time, the resources in the current cycle are missed, and the data needs to be transmitted on the resources in the next cycle, resulting in a larger delay. If the resource is configured at the expected time, the delay for transmitting the data is smaller when the data arrives later than the expected time, but when the data arrives earlier than the expected time, the data can be transmitted only by waiting for the time when the resource is configured, resulting in larger delay. How to reduce the delay of transmitting data is a problem to be solved.
Disclosure of Invention
The embodiment of the application provides a data transmission method and device, which can reduce the time delay of data transmission.
In a first aspect, the present application provides a data transmission method, where the method may be applied to a terminal device, a chip in the terminal device, and a logic module or software capable of implementing all or part of functions of the terminal device. The following description is given by way of example of the terminal device. The method comprises the following steps: the terminal equipment receives first information from the network equipment; according to the first information, the terminal equipment determines M time windows used for data transmission in N time windows of a first period, and performs data transmission with the network equipment in Y time windows in the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
It can be seen that the number of time windows for data transmission in the first period may be plural, and when the data in the first period arrives in advance of the expected time, the terminal device may receive or transmit the data in the preceding time window for data transmission; when the data arrives after the expected time, the terminal device can receive or transmit the data in a later time window for data transmission, which is beneficial to reducing the time delay of transmitting the data (transmitting/receiving the data).
When the method is applied to XR service or video service with the characteristic of periodic data transmission, N time windows and M time windows for data transmission in the N time windows can be configured for each period, the M time windows for data transmission in each period can be configured by one SPS/CG, and the value of M can be not limited by the number of the configured SPS/CG, so that more time windows for data transmission can be configured to cope with data jitter when the jitter range of the data is larger, and the method is beneficial to reducing the time delay of data transmission. In addition, the manner in which the M time windows for data transmission are configured by one SPS/CG may also reduce signaling overhead that is interacted with to activate the time windows for data transmission.
In an alternative embodiment, the method further comprises: the terminal device does not perform data transmission with the network device in M-Y time windows except Y time windows in the M time windows. That is, the terminal device may release (/ deactivate) the M-Y time windows, so that the M-Y time windows may be used for other uses, e.g., for other user data transmissions, which may be advantageous for improving throughput of the overall communication system.
In an alternative embodiment, the data transmission is a semi-persistent scheduling (SPS) transmission. The terminal device does not perform data transmission with the network device in M-Y time windows, and the method comprises the following steps: the terminal equipment determines that data transmission is not carried out with the network equipment in M-Y time windows according to the second information; the second information is used to indicate completion of the data transmission within the first period. It can be seen that, in case that the Y time windows complete the data transmission in the first period, the terminal device may release (/ deactivate) the remaining M-Y time windows, which is beneficial to improving the throughput of the overall communication system. In the SPS transmission, the terminal device knows that data transmission in the first period is completed through the second information, so that the remaining M-Y time windows can be released, and signaling for indicating the terminal device to release the M-Y time windows is not required to be additionally transmitted by the network device, so that signaling overhead can be saved.
In an alternative embodiment, the second information is received in the last time window of the Y time windows. For example, the second information may be carried in data received by the terminal device in a last time window of the Y time windows, so that the terminal device may learn whether the data transmission in the first period is completed based on the received data, and further may release M-Y time windows remaining in the M time windows when the data transmission in the first period is completed, which is beneficial to improving throughput of the overall communication system and saving signaling overhead.
In an alternative embodiment, the data transfer is a Configured Grant (CG) transfer. The method further comprises the steps of: the terminal device sends third information to the network device in the last time window of the Y time windows, wherein the third information is used for indicating the completion of data transmission in the first period. In CG transmission, the terminal device may inform the network device that data transmission is completed in the first period through the third information, so that the network device may release M-Y time windows remaining in M time windows when knowing that data transmission is completed in the first period, and may be beneficial to improving throughput of the overall communication system. And the terminal equipment does not need to additionally send signaling for indicating the network equipment to release M-Y time windows, thereby saving signaling overhead.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window to which the bit corresponds is used for data transmission. Then, the terminal device may determine M time windows for data transmission in the N time windows based on the bit map indicated by the first information, so that data transmission may be performed in Y time windows in the M time windows, which is beneficial to reducing delay of data transmission and reducing signaling overhead.
In an alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined. The position distribution mode of the M time windows in the N time windows can be predefined, and after the terminal device obtains the value of M, the M time windows used for data transmission can be determined from the N time windows based on the predefined position distribution mode, so that data transmission can be performed in Y time windows in the M time windows, which is beneficial to reducing the delay of data transmission and reducing the signaling overhead.
In an alternative embodiment, the method further comprises: the terminal device receives fourth information from the network device, wherein the fourth information is used for configuring the duration of the first period. The embodiment is beneficial to the terminal equipment to determine N time windows of the first time period and M time windows for data transmission based on the acquired duration of the first time period, so that data transmission can be carried out in Y time windows in the M time windows, and the delay of data transmission and the signaling overhead are reduced.
In an alternative embodiment, the M time windows include a last time window of the N time windows. The method can ensure that data from the network equipment in the downlink can be received by the terminal equipment within the range of N time windows, and the data in the uplink can be sent to the network equipment by the terminal equipment within the range of N time windows. In the downlink, even if the network device receives data from the server at a later time in the range of N time windows, the data may be transmitted to the terminal device in the last time window of the N time windows, and the terminal device may be able to receive the data in the last time window of the N time windows. In the uplink, even if the terminal device acquires data at a later time in the range of N time windows, the data may be transmitted to the network device in the last time window of the N time windows. It can be seen that this manner can reduce the influence, such as a larger time delay, caused by the terminal device being unable to send or receive data within the range of N time windows, on the transmissibility of the data.
When the embodiment is applied to XR service or video service, the N time windows of the first period may be N time windows for dividing the jitter range of the data, which ensures that the terminal device can send or receive the data in the current period even when the latest time of the jitter range arrives, and can send or receive the data in the current period without waiting for the time window for data transmission in the next period, thereby reducing the delay.
In a second aspect, the present application provides a data transmission method, where the method may be applied to a network device, a chip in a terminal device, and a logic module or software capable of implementing all or part of the functions of the network device. The following describes an example of a terminal device, and the method includes: the network equipment sends first information to the terminal equipment; the first information is used to configure M time windows for data transmission among N time windows of the first period. The network equipment performs data transmission with the terminal equipment in Y time windows in M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
It can be seen that the time window for data transmission in the first period may be plural, and when the data in the first period arrives in advance of the expected time, the network device may send or receive the data in the preceding time window for data transmission; when the data arrives at a delay of the expected time, the network device can send or receive the data in a later time window for data transmission, which is beneficial to reducing the delay of transmitting the data (sending/receiving the data).
When the method is applied to XR service or video service with the characteristic of periodic data transmission, N time windows and M time windows for data transmission in the N time windows can be configured for each period, the M time windows for data transmission in each period can be configured by one SPS/CG, and the value of M can be not limited by the number of the configured SPS/CG, so that more time windows for data transmission can be configured to cope with data jitter when the jitter range of the data is larger, and the method is beneficial to reducing the time delay of data transmission. In addition, the manner in which the M time windows for data transmission are configured by one SPS/CG may also reduce signaling overhead that is interacted with to activate the time windows for data transmission.
In an alternative embodiment, the method further comprises: the network device does not perform data transmission with the terminal device in M-Y time windows except Y time windows in the M time windows. That is, the network device may release (/ deactivate) the M-Y time windows so that the M-Y time windows may be used for other uses, e.g., for other user data transmissions, which may be advantageous for improving throughput of the overall communication system.
In an alternative embodiment, the data transmission is a semi-persistent scheduling SPS transmission. The method further comprises the steps of: the network device transmits second information to the terminal device in a last time window of the Y time windows, the second information being used to indicate completion of data transmission in the first period. In SPS transmission, the network device can inform the terminal device of the completion of data transmission in the first period through the second information, so that the terminal device can release M-Y time windows remained in the M time windows when the terminal device knows that the data transmission in the first period is completed, and the throughput of the whole communication system can be improved. And the network equipment does not need to additionally send signaling for indicating the terminal equipment to release M-Y time windows, thereby saving signaling overhead.
In an alternative embodiment, the data transfer is a configuration grant CG transfer; the network device does not perform data transmission with the terminal device in M-Y time windows, and the method comprises the following steps: according to the third information, the network equipment determines that data transmission is not carried out with the terminal equipment in M-Y time windows; the third information is used to indicate completion of the data transmission within the first period. It can be seen that, when the Y time windows complete data transmission in the first period, the network device may release the remaining M-Y time windows, which is beneficial to improving throughput of the overall communication system. In addition, in CG transmission, the network device knows that data transmission is completed in the first period through the third information, so that the remaining M-Y time windows can be released, and signaling for indicating the network device to release the M-Y time windows is not required to be additionally sent by the terminal device, so that signaling overhead can be saved.
In an alternative embodiment, the third information is received in the last time window of the Y time windows. For example, the second information may be carried in data received by the network device in a last time window of the Y time windows, so that the network device may learn whether the data transmission in the first period is completed based on the received data, and then may release M-Y time windows remaining in the M time windows when the data transmission in the first period is completed, which is beneficial to improving throughput of the overall communication system and saving signaling overhead.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window to which the bit corresponds is used for data transmission. The method is beneficial to the terminal equipment to determine M time windows used for data transmission in N time windows based on the bit bitmap indicated by the first information, so that data transmission can be carried out in Y time windows in the M time windows, and the method is beneficial to reducing the time delay of data transmission and signaling overhead.
In an alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined. Therefore, the position distribution mode of the M time windows in the N time windows can be predefined, which is favorable for the terminal device to determine the M time windows for data transmission from the N time windows based on the predefined position distribution mode after acquiring the value of M, and further, the data transmission can be performed in Y time windows in the M time windows, which is favorable for reducing the time delay of transmitting data and reducing the signaling overhead.
In an alternative embodiment, the method further comprises: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. The embodiment is beneficial to the terminal equipment to determine the N time windows of the first time period and the M time windows for data transmission based on the duration of the first time period, so that the data transmission can be carried out in Y time windows in the M time windows, and the time delay of data transmission and the signaling overhead are reduced.
In an alternative embodiment, the M time windows include a last time window of the N time windows. The method can ensure that the downlink data can be sent to the terminal equipment by the network equipment within the range of N time windows, and the uplink data from the terminal equipment can be received by the network equipment within the range of N time windows. In the downlink, even if the network device receives data from the server at a later time in the range of N time windows, the data may be transmitted to the terminal device at the last time window of the N time windows. In the uplink, even if the terminal device acquires data at a later time in the range of N time windows, the data may be transmitted to the network device in the last time window of the N time windows, and the network device may be able to receive the data in the last time window of the N time windows. It can be seen that this manner can reduce the impact on the transmissibility of data, such as greater latency, caused by the inability of the network device to send or receive data within the range of N time windows.
When the embodiment is applied to XR service or video service, the N time windows of the first period may be N time windows for dividing the jitter range of the data, which can ensure that the network device can send or receive the data in the current period even when the latest time of the jitter range arrives, and can not wait until the time window for data transmission in the next period to send or receive the data in the current period, thereby reducing the time delay.
In a third aspect, the present application also provides a communication device. The communication device may be a network device or a terminal device, or may be a chip in the network device or the terminal device, or may be a logic module or software capable of implementing all or part of the functions of the network device or the terminal device. The communication device has a function of implementing some or all of the embodiments described in the first aspect, or a function of implementing some or all of the functional embodiments described in the second aspect. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.
In one possible design, the communication device may include a processing unit and a communication unit in a structure, where the processing unit is configured to support the communication device to perform the corresponding functions in the method. The communication unit is used for supporting communication between the communication device and other communication devices. The communication device may further comprise a memory unit for coupling with the processing unit and the communication unit, which holds the necessary program instructions and data of the communication device.
In one embodiment, the communication device includes: the processing unit is used for controlling the communication unit to transmit and receive data/signaling.
The communication unit is for receiving first information from a network device. The processing unit is used for determining M time windows used for data transmission in N time windows of a first period according to the first information, and carrying out data transmission with the network equipment in Y time windows in the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In addition, in this aspect, other optional embodiments of the communication device may be referred to in the relevant content of the first aspect, which is not described in detail herein.
In another embodiment, the communication device includes: the processing unit is used for controlling the communication unit to transmit and receive data/signaling.
The communication unit is used for sending first information to the terminal equipment; the first information is used to configure M time windows for data transmission among N time windows of the first period. The processing unit is used for carrying out data transmission with the terminal equipment in Y time windows in the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In addition, in this aspect, other optional embodiments of the communication device may be referred to in the related content of the second aspect, which is not described in detail herein.
As an example, the communication unit may be a transceiver or a communication interface, the storage unit may be a memory, and the processing unit may be a processor. The processor is coupled to a memory for storing a program or instruction processor operable when executed by the processor to cause the communications apparatus to perform the method of the first or second aspect described above, the transceiver or communications interface being operable to transmit and receive signals and/or data.
In one embodiment, the communication device includes: a processor and a transceiver. The transceiver is for receiving first information from a network device. The processor is used for determining M time windows used for data transmission in N time windows of a first period according to the first information, and carrying out data transmission with the network equipment in Y time windows in the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In addition, in this aspect, other optional embodiments of the communication device may be referred to in the relevant content of the first aspect, which is not described in detail herein.
In another embodiment, the communication device includes: a processor and a transceiver. The transceiver is used for sending first information to the terminal equipment; the first information is used to configure M time windows for data transmission among N time windows of the first period. The processor is used for carrying out data transmission with the terminal equipment in Y time windows in the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In addition, in this aspect, other optional embodiments of the communication device may be referred to in the related content of the second aspect, which is not described in detail herein.
In another embodiment, the communication device is a chip or a system-on-chip. The processing unit may also be embodied as a processing circuit or logic circuit; the transceiver unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit, etc. on the chip or system-on-chip.
In an implementation, a processor may be used to perform, for example and without limitation, baseband related processing, and a transceiver or communication interface may be used to perform, for example and without limitation, radio frequency transceiving. The above devices may be provided on separate chips, or may be provided at least partially or entirely on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. Wherein the analog baseband processor may be integrated on the same chip as the transceiver (or communication interface), and the digital baseband processor may be provided on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, the digital baseband processor may be integrated on the same chip as a variety of application processors (e.g., without limitation, graphics processors, multimedia processors, etc.). Such a Chip may be referred to as a System on a Chip (SoC). Whether the individual devices are independently disposed on different chips or integrally disposed on one or more chips is often dependent on the needs of the product design. The implementation form of the device is not limited in the embodiment of the application.
In a fourth aspect, the present application also provides a processor for performing the above-described methods. In performing these methods, the process of transmitting the signal and receiving the signal in the above-described methods may be understood as a process of outputting the signal by a processor and a process of inputting the signal by a processor. When the signal is output, the processor outputs the signal to the transceiver for transmission by the transceiver (or communication interface). The signal, after being output by the processor, may also require additional processing before reaching the transceiver (or communication interface). Similarly, when the processor receives an input of the signal, the transceiver (or communication interface) receives the signal and inputs it to the processor. Further, after the transceiver (or communication interface) receives the signal, the signal may need to be processed further before being input to the processor.
With respect to operations such as transmission and reception, etc., related to the processor, unless specifically stated otherwise, or if there is no conflict with the actual role or inherent logic of the operations in the related description, the operations such as output and reception, input, etc., of the processor may be understood more generally, rather than the operations such as transmission and reception, which are directly performed by the radio frequency circuit and the antenna.
In implementation, the processor may be a processor dedicated to performing the methods, or may be a processor that executes computer instructions in a memory to perform the methods, e.g., a general purpose processor. The Memory may be a non-transitory (non-transitory) Memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately provided on different chips, and the type of the Memory and the manner of providing the Memory and the processor are not limited in this embodiment of the present application.
In a fifth aspect, the present application also provides a communication system comprising at least one terminal device and at least one network device of the above aspects. In another possible design, the system may further include other devices that interact with the terminal device and/or the network device in the solution provided in the present application.
In a sixth aspect, the present application provides a computer readable storage medium storing a computer program which, when executed, causes the method of any one of the first or second aspects described above to be performed.
In a seventh aspect, the present application also provides a computer program product comprising instructions, the computer program product comprising: computer program code which, when executed, causes the method of any of the first or second aspects described above to be performed.
In an eighth aspect, the present application provides a chip system comprising a processor and an interface for obtaining a program or an instruction, the processor for invoking the program or instruction to implement the functionality of the first aspect or for invoking the program or instruction to implement the functionality of the second aspect. In one possible design, the system on a chip further includes a memory for holding program instructions and data necessary for the terminal. The chip system can be composed of chips, and can also comprise chips and other discrete devices.
Drawings
Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an ideal case and actual data arrival provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of an SPS process provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of a CG flow of type 1 provided by an embodiment of the application;
FIG. 5 is a schematic diagram of a CG flow of type 2 provided by an embodiment of the application;
FIG. 6 is a schematic diagram of a time window distribution provided in an embodiment of the present application;
FIG. 7 is a schematic diagram of a probability distribution of video frame arrival provided by an embodiment of the present application;
fig. 8 is a flow chart of a data transmission method according to an embodiment of the present application;
FIG. 9 is a schematic diagram of another time window distribution provided by an embodiment of the present application;
FIG. 10 is a schematic diagram of another time window distribution provided by an embodiment of the present application;
FIG. 11 is a schematic diagram of another time window distribution provided by an embodiment of the present application;
FIG. 12 is a schematic diagram of another time window distribution provided by an embodiment of the present application;
fig. 13 is a schematic diagram of a data transmission method during SPS transmission according to an embodiment of the present application;
fig. 14 is a schematic diagram of a data transmission method during CG transmission according to an embodiment of the present application;
fig. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 16 is a schematic structural diagram of another communication device according to an embodiment of the present application;
fig. 17 is a schematic structural diagram of a chip according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described below with reference to the accompanying drawings in the embodiments of the present application.
First, in order to better understand the data transmission method disclosed in the embodiments of the present application, a communication system to which the embodiments of the present application are applicable will be described.
The technical scheme of the embodiment of the application can be applied to various communication systems. For example, the global system for mobile communications, the long term evolution (long term evolution, LTE) system, the universal mobile telecommunications system, the fourth generation mobile telecommunications technology (4th generation,4G) system, the next generation radio access network (next-generation radio access network, NG-RAN) system, the new air interface technology (NR) system, the fifth generation mobile telecommunications technology (5th generation mobile networks,5G) system, and with the development of the communication technology, the technical solutions of the embodiments of the present application can also be used for the subsequent evolution communication systems, such as the sixth generation mobile telecommunications technology (6th generation mobile networks,6G) system, the seventh generation mobile telecommunications technology (7th generation mobile networks,7G) system, and so on.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, a network device and a terminal device, where uplink transmission may be performed between the network device and the terminal device, and downlink transmission may be performed. In addition, the communication system may also include channels between the network device and the terminal device for transmitting data/signals, such as transmission media, e.g., fiber optics, cable, or the atmosphere. The number and form of the devices shown in fig. 1 are used for illustration and not to limit the embodiments of the present application, and in practical applications, two or more network devices and two or more terminal devices may be included. The communication system shown in fig. 1 is illustrated by taking one network device and two terminal devices (i.e., terminal device #1 and terminal device #2 in fig. 1) as an example. In fig. 1, a base station is taken as an example of a network device, and a Virtual Reality (VR) glasses are taken as an example of a terminal device.
In the embodiment of the present application, the network device may be a device with a wireless transceiver function, or may be a chip disposed on a device with a wireless transceiver function, where the network device includes, but is not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a network device controller (base station controller, BSC), a network device transceiver station (base transceiver station, BTS), a home network device (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), an access Node (AP) in a wireless fidelity (wireless fidelity, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission point (transmission and reception point, TRP or transmission point, TP), etc., may be a device used in a 4G, 5G, or even 6G system, such as an evolved base station (NodeB or eNB-NodeB, evolutional Node B) in LTE, a next generation LTE (next-generation eNodeB, ng-eNB), a next generation base station (network Node B, gbb or gNB), a transceiver point, or a transmission point (NB), or may also be a transmission point (NB) or may be a device formed by a base band Node, a distributed network unit (pdu), a distributed network unit (network), or a distributed network unit (pdu), or a distributed network unit (femto unit, a distributed unit, or a distributed network unit (pdu, a distributed unit, a network unit, a distributed unit, or a distributed unit). Wherein, the base station may be: macro base station, micro base station, pico base station, small station, relay station, or balloon station, etc. The network device may also be a server, a wearable device, or an in-vehicle device, etc.
In this embodiment of the present application, the terminal device may also be referred to as a User Equipment (UE), a terminal, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a user agent, or a user apparatus, and may be applied to a 4G, 5G, or even 6G system, etc. The terminal device in this embodiment of the present application may be a joint device that performs digital signal transmission and reception on a common telephone line, and may also be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a head-mounted display (head mounted display, HMD), a VR terminal device (such as VR glasses), an augmented reality (augmented reality, AR) terminal device (such as AR glasses), a Mixed Reality (MR) terminal device, a wireless terminal in industrial control (industrial control), a haptic terminal device, a vehicle-mounted terminal device, a wireless terminal in unmanned (self-driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), an RSU of the aforementioned wireless terminal type, a wearable terminal device, or the like.
In order to facilitate an understanding of the embodiments disclosed herein, the following two descriptions are provided.
(1) In the embodiments disclosed in the present application, the scenario is described by taking the scenario of an NR network in a wireless communication network as an example, and it should be noted that the schemes in the embodiments disclosed in the present application may also be applied to other wireless communication networks, and the corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.
(2) Embodiments of the present disclosure will present various aspects, embodiments, or features of the present disclosure around a system comprising a plurality of devices, components, modules, etc. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, combinations of these schemes may also be used.
Next, related concepts related to the embodiments of the present application will be briefly described.
1. Augmented reality (XR)
XR is a technology that can combine real and virtual environments and allow human-machine interaction, and includes AR and VR.
AR refers to a technology that allows virtual world on a screen to interact with real world scenes by combining image analysis technology through the position and angle of camera images.
VR is a technology that can generate a virtual world of a three-dimensional space using computer simulation and can provide a user with sensory simulation about vision, etc., which can make the user feel as if they were in the scene, and can observe things in the three-dimensional space instantaneously and without limitation. VR has characteristics such as multi-view, interactivity are strong, and it can be applied to education, amusement, military affairs, medical treatment, environmental protection, transportation, public health etc. various fields closely related to people's production, life.
2. Jitter (jitter)
Jitter refers to the fact that the arrival time of data is advanced or retarded compared to the ideal expected time. When the jitter corresponding value is smaller than 0, namely jitter <0, the arrival time of the data is indicated to be earlier than the expected time; at jitter=0, it is stated that the arrival time of the data is just at the expected time; at jitter >0, the arrival time of the data is described as being delayed from the expected time. The data may be an XR service or a video frame in a video service, where the XR service or the video frame in the video service has a periodic transmission characteristic, and a transmission period of the video frame is an inverse of a frame rate.
In the downlink transmission process of the video frame, the server sends the video frame to the network equipment, and the network equipment sends the received video frame to the terminal equipment. In an ideal case, the server periodically transmits video frames to the network device, and the video frames in each period arrive at the network device at the expected time in the period, and then the video frames in each period arrive at the terminal device at the expected time in the period. For example, in connection with FIG. 2, the frame rate of the video frames is 60 Frames Per Second (FPS), i.e., the period of the video frames is Second (second, s)Approximately 16.67 milliseconds (ms), then ideally the video frames arrive at the network device with a period of 16.67ms, i.e., ideally one video frame arrives at the network device every 16.67ms, the time marked with a dashed line in fig. 2 being the expected time.
In practical situations, due to factors such as server encoding processing, fixed network/core network transmission, etc., in each period, in fact, a video frame may arrive at a network device at an expected time, may arrive earlier than the expected time, and may arrive later than the expected time. For example, in connection with fig. 2, the difference between the actual arrival time and the expected time of the video frames in different periods may not be equal, i.e. the video frames may not arrive at the network device exactly according to a period of 16.67ms, as in fig. 2, the arrival time of the 2 nd video frame is 5ms later than the expected time, i.e. jitter=5 ms of the 2 nd time-frequency frame, and the arrival time of the 4 th video frame is 3ms earlier than the corresponding expected time, i.e. jitter= -3ms of the 4 th time-frequency frame.
In addition, the jitter of data in uplink transmission is similar to that of downlink transmission, in uplink transmission, the terminal equipment performs coding processing on the data, and the data can be sent to the network equipment after the coding processing is completed, so that the data has coding processing time delay, and the coding processing time delay of the terminal equipment for different data frames may be different, so that the time for the terminal equipment to send the data to the network equipment may have jitter.
Jitter range refers to the range of time that data is likely to arrive compared to the expected time. For example, the data arrives at a time 4ms earlier than the expected time and arrives at a time 4ms later than the expected time at the latest, and the jitter range is [ -4ms,4ms ]. In addition, the jitter range statistically obeys a specific probability distribution, which may be a statistical distribution such as gaussian distribution, rayleigh distribution, rice distribution, or the like. For example, when the jitter range follows a truncated Gaussian distribution with a mean value of 0 and a variance of 2ms, the jitter range is [ -4ms,4ms ].
3. Semi-persistent scheduling (semi-persistent scheduling, SPS)
The SPS refers to that the network device allocates a time-frequency resource designated for downlink transmission through a downlink control channel (physical downlink control channel, PDCCH), and the network device and the terminal device can periodically reuse the time-frequency resource for downlink transmission, so that the SPS has the characteristic of 'one allocation and multiple uses', and the cost of the PDCCH can be effectively reduced. SPS may be applied in the downlink transmission of traffic where data has the characteristic of being periodically transmitted, for example SPS may be applied in the downlink transmission of XR traffic or video traffic. In addition, the time-frequency resource configured based on the SPS for downlink transmission may also be referred to as SPS resource, and downlink transmission using the SPS resource may also be referred to as SPS transmission.
Specifically, in connection with fig. 3, the network device may carry relevant parameters of SPS in radio resource control (radio resource control, RRC) signaling to configure periodicity of SPS resources (belonging to downlink resources). The network device may also transmit a PDCCH to the terminal device, the PDCCH carrying downlink control information (downlink control information, DCI) for activating SPS resources, the DCI indicating a frequency domain resource allocation (frequency domain allocation assignment, FDRA) in the activated SPS resources, and a modulation and coding scheme (modulation and coding scheme, MCS). The terminal device may determine a time slot in which the SPS resource that is periodically validated is located based on the DCI received to activate the SPS resource. Then the terminal device may periodically receive a physical downlink shared channel (physical downlink shared channel, PDSCH) from the network device on the activated SPS resources. In addition, if SPS resources need to be released (may also be referred to as deactivating SPS resources), the network device may again transmit a PDCCH carrying DCI for releasing SPS resources, the DCI indicating the SPS resources that need to be released.
Wherein, the related parameters of SPS carried in RRC signaling may be indicated by one or more fields in SPS configuration (i.e., SPS-Config) in RRC signaling. The relevant parameters of SPS carried in RRC signaling may include: configuring a scheduling radio network temporary identity (configured scheduling radio network temporary identifier, CS-RNTI), SPS period, number of hybrid automatic repeat request processes (hybrid automatic repeat request Process, HARQ Process), start offset of HARQ Process index value (HARQ Process identity document, HARQ Process ID), etc.; if multiple SPS's are to be configured, the SPS's associated parameters also include an index value corresponding to each SPS.
In NR, the SPS period is an integer multiple of the slot length (i.e., the duration of one slot) supported by NR, i.e., the SPS period is equal to k×the slot length, k being a positive integer. For example, at a subcarrier spacing of 15 kilohertz (kHz), the slot length is 1ms and k is a positive integer less than or equal to 640. When the subcarrier spacing is 30KHz, the time slot length is 0.5ms, and k is a positive integer less than or equal to 1280. The slot length is 0.25ms with a 60kHz spacing using a conventional cyclic prefix (normal cyclic prefix, NCP) or with a 60kHz spacing using an extended cyclic prefix (extend cyclic prefix, ECP), k being a positive integer less than or equal to 2560. The slot length is 0.125ms and k is a positive integer less than or equal to 5120 when the subcarrier spacing is 120 kHz.
The fields in the DCI for activating SPS resources need to satisfy the following conditions: (1) The cyclic redundancy check (cyclic redundancy check, CRC) is scrambled with a CS-RNTI provided in RRC signaling. (2) The newly transmitted data indication (new data indicator, NDI) is all set to '0'. (3) The HARQ process number (i.e., HARQ Process Number) is fully set to '0'. In addition, when multiple SPS are configured, HARQ Process Number will not be all-set '0' but rather indicate HARQ Process Number that the SPS resources are activated. (4) The redundancy version (redundancy version, RV) is fully set to '0'.
After receiving DCI for activating SPS resources, the terminal device may determine a slot (slot) in which the SPS resources are periodically validated based on the following formula: (numberofslotsperframe×sfn+ slot number in the frame) = [ (numberofslotsperframe×sfn) start time +slot start time )+n×periodicity×numberOfSlotsPerFrame/10]Modulo (1024×number ofSlotsPerframe). Wherein SFN represents a radio system frame number, numberOfSlotsPerframe represents the number of slots contained in each radio system frame, slot number in the frame represents the number of slots in the radio system frame, n represents the nth SPS resource, and periodicityRepresenting the periodicity of SPS resources, SFN start time Refers to the wireless frame number, slot, of the initial transmission of PDSCH start time Refers to the slot number of the initial transmission of the PDSCH.
The fields in the DCI for releasing SPS resources need to satisfy the following conditions: (1) The CRC is scrambled with CS-RNTI provided in RRC signaling. (2) HARQ Process Number all sets to '0'. (3) NDI is fully set to '0'; when multiple SPS are configured, HARQ Process Number will not be all-set '0' but rather indicate HARQ Process Number that the SPS resources are activated. (4) RV is set to '0'. (5) MCS is fully set to '1'. (6) FDRA full set '1' (special scene full set '0').
4. Configuration authorization (configured grant, CG)
CG refers to that the network device assigns a time-frequency resource for uplink transmission through RRC signaling or PDCCH, and the network device and the terminal device may periodically reuse the time-frequency resource for uplink transmission. CG may be applied in the uplink transmission of traffic with the characteristic of periodic transmission, e.g. CG may be applied in the uplink transmission of XR traffic or video traffic. In addition, the time-frequency resource configured based on CG for uplink transmission may also be referred to as CG resource, and uplink transmission using CG resource may also be referred to as CG transmission.
CG includes type 1 and type 2. The related parameters of CG are carried by RRC signaling in type 1, which is also used to activate CG resources. Type 2 is similar to the way SPS is used to configure SPS resources, the related parameters of CG are carried by RRC signaling, and CG resources are activated through PDCCH. In CG of type 1 and type 2, the relevant parameters of the CG carried in RRC signaling may be indicated by one or more fields in the CG configuration (i.e., CG-Config) in RRC signaling. These two types of CG are each described below.
In connection with fig. 4, fig. 4 illustrates a CG flow of type 1. Specifically, the network device may carry relevant parameters of CG in RRC signaling to configure periodicity of CG resources, where relevant parameters of CG carried in RRC signaling may include: CS-RNTI, CG period, CG resources (including time domain resources and frequency domain resources), HARQ Process Number and offset values, specific values of MCS, number of repetitions, etc. The terminal device may determine CG resources that are periodically validated according to the received RRC signaling and periodically send a physical uplink shared channel (physical uplink shared channel, PUSCH) to the network device on these CG resources. If the network device needs to update the related parameters of the CG, the network device can also send RRC signaling to the terminal device again to indicate the updated parameters, so that the network device and the terminal device can use the CG resources with updated parameters for uplink transmission.
In connection with fig. 5, fig. 5 illustrates a CG flow of type 2. Specifically, the network device may carry related parameters of CG in RRC signaling, including CS-RNTI, CG period, etc.; when multiple CGs are configured, the RRC signaling may carry respective parameters related to the multiple CGs, where the multiple CGs may correspond to different CG periods. The network device also transmits a PDCCH, where the PDCCH carries DCI for activating CG resources, where the DCI indicates frequency domain resources and MCS in the activated CG resources, and a field format requirement of the DCI is similar to a format requirement of DCI for activating SPS resources in SPS, which is not described in detail. And the terminal equipment determines the time slot where the CG resources which are periodically effective are located, and sends the PUSCH to the network equipment on the CG resources. If CG resources need to be released (also referred to as CG resources are deactivated), the network device needs to send a PDCCH again, where the PDCCH carries DCI for releasing CG resources, where the DCI indicates that CG resources need to be released, and a format requirement of the DCI is similar to a format requirement of DCI for releasing SPS resources in the SPS, which is not described herein. If the released CG resource is to be reused, the network device needs to retransmit DCI for activating the CG resource to reactivate the CG resource, and the terminal device may transmit PUSCH to the network device using the reactivated CG resource. In addition, the specific description of the parameter updating of CG can be referred to the related description in type 1, and will not be repeated.
5. Time window
In the embodiment of the present application, a time window is composed of one or more time units. The time units may be one or more frames, one or more subframes (sub frames), one or more slots (slots), one or more minislots, one or more symbols, etc. Wherein the symbol may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, a discrete fourier transform spread orthogonal frequency division multiplexing (discrete fourier transform spread spectrum orthogonal frequency division multiplexing, DFT-S-OFDM) symbol, or the like. In addition, the time unit may be at least one of a millisecond, a second, a subframe, a mini-slot, and a symbol. Wherein the mini-slot is made up of a plurality of symbols.
In addition, in the embodiment of the present application, the duration of the time window refers to the duration of the period from the start position of the time window to the end position of the time window. Time window for data transmission means that the time window is configured with resources for data transmission, and data transmission in the time window means that data transmission is performed on the resources configured in the time window. For example, when the data transmission is an SPS transmission, the time window is used for data transmission to indicate that the time window is configured with SPS resources, and the data transmission in the time window is performed on the SPS resources configured in the time window. For another example, when the data transmission is CG transmission, the time window is used for data transmission to indicate that CG resources are allocated to the time window, and the data transmission in the time window means that data transmission is performed on CG resources allocated to the time window.
SPS grid (Raster), CG Raster
The SPS master is used to characterize a time period within each cycle divided into a plurality of time windows, at least one of which is used for SPS transmissions. CG master is used to characterize the division of a period within each cycle into a plurality of time windows, at least one of which is used for CG transmission. Wherein the period for dividing into a plurality of time windows may be a period represented by a jitter range.
SPS and CG masters may be represented using bit maps (bitmaps). The bit map (i.e., SPS Raster Bitmap) of the SPS master may represent the position distribution of the time windows for SPS transmissions in one period among multiple time windows, with the position distribution of the time windows for SPS transmissions in different periods among multiple time windows being the same. SPS Raster Bitmap each bit corresponds to at least one of the time windows, and when the value of the bit is "0", the time window corresponding to the bit is indicated not to be used for data transmission, and when the value of the bit is "1", the time window corresponding to the bit is indicated to be used for data transmission. The bit map of the CG register (i.e., CG register Bitmap) is similar to SPS Raster Bitmap and will not be described again.
For example, in connection with fig. 6, in a period of 16.67ms, the duration of the jitter range is 8ms (e.g., the jitter range of 0ms to 8ms in fig. 6), the slot length is 0.5ms, the 8ms period may be divided into 16 time windows of which the duration is 0.5ms, and the time windows represented by gray rectangles in fig. 6 are time windows for data transmission, where the time windows represented by the gray rectangles in the 16 time windows are 0.5ms to 1ms, 1.5ms to 2ms, 2.5ms to 3ms, 3.5ms to 4ms, 4ms to 4.5ms, 4.5ms to 5ms, 5.5ms to 6ms, 6.5ms to 7ms, and 7.5ms to 8 ms. Then SPS Raster Bitmap is [0,1,0,1,0,1,0,1,1,1,0,1,0,1,0,1] the 16 bits correspond one-to-one with 16 time windows arranged from first to last in time in a front to back order.
In addition, in a time division duplex (time division duplexing, TDD) system, it is defined whether each time slot can be used for uplink or downlink, SPS resources need to be allocated on a time slot (i.e., D slot) that can be used for downlink, CG resources need to be allocated on a time slot (i.e., U slot) that can be used for uplink, and thus SPS or CG registers also need to be adjusted based on whether each time slot can be used for uplink or downlink. Specifically, if a certain U slot in the SPS master is configured to be used for SPS transmission, the U slot needs to be adjusted not to be used for SPS transmission, and a D slot located after the U slot and closest to the U slot is configured as a D slot used for SPS transmission; the SPS rate after adjustment is used in the SPS transmission. If a D slot is configured for CG transmission in the CG master, the D slot is adjusted not to be used for CG transmission, and a U slot which is positioned behind the D slot and is closest to the D slot is configured as a U slot for CG transmission; the CG master after adjustment is used in the CG transmission process.
For example, there are 16 slots, where the 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16 slots are D slots and the 4, 9, 14 slots are U slots. SPS Raster Bitmap is [0,1,0,1,0,1,0,1,1,1,0,1,0,1,0,1], which SPS Raster Bitmap indicates whether each slot of the 16 slots is used for SPS transmissions. It can be seen that the 4 th slot is a U slot but is configured for SPS transmission, thus adjusting the 4 th slot not to be used for SPS transmission, while the 5 th slot is one D slot located after the 4 th slot and closest to the 4 th slot, thus adjusting the 5 th slot not to be used for SPS transmission. The 9 th slot is a U slot configured for SPS transmission, so the 9 th slot is adjusted not to be used for SPS transmission, while the 10 th slot is a D slot located after the 9 th slot and closest to the 9 th slot, and the 10 th slot is configured as a slot for SPS transmission, so the 10 th slot is not adjusted. Similarly, the 14 th slot is adjusted to not be used for SPS transmissions, and the 15 th slot is adjusted to not be used for SPS transmissions. Based on the above adjustment, the adjusted SPS Raster Bitmap is [0,1,0,0,1,1,0,1,0,1,0,1,0,0,1,1].
7. Average scheduling delay (average delay)
The average scheduling delay of SPS or CG registers satisfies the following equation (1):
wherein N is the total number of time windows obtained by dividing time periods in an SPS (SPS) register or a CG (CG) register; p is p i Is the probability that the data arrives in the ith time window of the N time windows; d, d i The scheduling delay corresponding to the ith time window in the N time windows, namely, when the ith time window in the N time windows arrives, the delay of the time window capable of being used for transmitting the data packet compared with the ith time window can be expressed as the number of the time windows which are different from each other.
For example, the jitter of a video frame follows a truncated Gaussian distribution with an average value of 0 and a standard deviation of 2ms, jitter rangeIs [ -4ms,4ms]The slot length is 0.5ms. Dividing this period of the jitter range into 16 time windows of length 0.5ms each, the probability that a video frame will arrive in each of the 16 time windows being p= [ P ] 1 ,p 2 ,…,p 16 ]＝[0.0401,0.0267，0.0388,0.0531,0.0679,0.0819,0.0928,0.0987,0.0987,0.0928,0.0819,0.0679,0.0531,0.0388,0.0267,0.0401]As shown in fig. 7. If SPS Raster Bitmap is [0,0,0,1,0,1,0,1,1,1,0,1,0,0,0,1 ]]The scheduling delay corresponding to the 16 time windows is d= [ d ] 1 ,d 2 ,…,d 16 ]＝[3,2,1,0,1,0,1,0,0,0,1,0,3,2,1,0]Substituting P and d into equation (1) yields an average scheduling delay of 0.7187 time windows, i.e., an average scheduling delay equal to 0.7187 ×0.5ms= 0.3594ms.
For the data with jitter in the XR service or the video service, in each period, if the SPS resource or the CG resource is configured before the expected time, the SPS resource or the CG resource in the current period is missed when the data arrives later than the expected time, and the SPS resource or the CG resource in the next period is required to be adopted for transmission, so that the time delay for transmitting the data is larger. If the SPS resource or CG resource is configured after the expected time, when the data arrives at the network device earlier than the expected time, it is necessary to wait for a period of time until the time when the SPS resource or CG resource is configured to transmit the data, resulting in a larger delay for transmitting the data.
The embodiment of the application provides a data transmission method, in which a terminal device receives first information from a network device; according to the first information, the terminal equipment determines M time windows used for data transmission in N time windows of a first period, and performs data transmission with the network equipment in Y time windows in the M time windows; wherein N is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M. Based on the method, the data can be transmitted in the front time window for data transmission when the expected time arrives in advance, and the data can be transmitted in the rear time window for data transmission when the expected time arrives after the data delay, so that the delay of data transmission is reduced. In addition, M time windows for data transmission in the method can be configured in one SPS/CG, and the value of M can be not limited by the number of the configured SPS/CG, so that more time windows for data transmission can be configured to cope with the jitter of data when the jitter range of the data is larger, and the method is beneficial to reducing the time delay of data transmission. In addition, the manner in which the time window for data transmission is configured by one SPS/CG may also reduce signaling overhead that is interacted with to activate the time window for data transmission.
Embodiments of the present application are described in detail below with reference to the accompanying drawings. The flow diagrams in the present application take the network device and the terminal device as the execution bodies of the interactive schematic to illustrate the corresponding methods, but the present application does not limit the execution bodies of the interactive schematic. For example, the network device in the figures may also be a chip, a chip system, or a processor that supports the network device to implement the corresponding method, and may also be a logic module or software that can implement all or part of the functions of the network device; the terminal device in the figure may also be a chip, a chip system, or a processor supporting the terminal device to implement the corresponding method, or may also be a logic module or software capable of implementing all or part of the functions of the terminal device.
Referring to fig. 8, fig. 8 is a flowchart of a data transmission method according to an embodiment of the present application, where the data transmission method is illustrated from the point of interaction between a network device and a terminal device, and the data transmission method includes the following steps:
s101, network equipment sends first information to terminal equipment; the first information is used for configuring M time windows for data transmission in N time windows of a first period; n is an integer greater than 1, and M is a positive integer less than N. Accordingly, the terminal device receives the first information from the network device.
Alternatively, the first period may be a jitter range of the data; the N time windows of the first period may be N periods obtained by dividing the first period, and a duration of each of the N time windows may be equal to a slot length. For example, the jitter range of data is 0ms to 4ms, the slot length is 0.5ms, and then the period of 0ms to 4ms can be divided into 8 time windows with equal duration of 0.5ms, and the 8 time windows are respectively: 0ms to 0.5ms, 0.5ms to 1ms, 1ms to 1.5ms, 1.5ms to 2ms, 2ms to 2.5ms, 2.5ms to 3ms, 3ms to 3.5ms, 3.5ms to 4ms.
When the method is applied to XR service or video service, N time windows of a first period and a first period exist in each period respectively, the first period in each period is the jitter range of data in the period, and the number of the time windows obtained by dividing the first period in each period, namely the value of N, is the same. For example, the period of data in XR service or video service is 16.67ms, the first period is a period of 0ms to 16.67ms, the second period is 16.67ms to 33.34ms, the jitter range of data in the first period is 0ms to 8ms, and the jitter range of data in the second period is 16.67ms to 24.67ms; then, the first period in the first period is a period of 0ms to 8ms, and the N time windows of the first period in the first period are obtained by dividing the period of 0ms to 8 ms; the first period in the second period is a period of 16.67ms to 24.67ms, and the N time windows of the first period in the second period are divided into periods of 16.67ms to 24.67 ms.
Optionally, the M time windows for data transmission include a last time window of the N time windows. This way it is ensured that data can be transmitted between the network device and the terminal device within the range of N time windows even if the data arrives in the last time window of the N time windows. When the method is applied to XR service or video service, the data in each period can be ensured to be transmitted in the period, and the influence on the data transmissibility caused by the fact that the data cannot be transmitted in the period due to the fact that a time window which is not used for data transmission is reached/after the data in each period is reduced.
In this embodiment of the present application, the last time window in the N time windows refers to a time window with the last time domain position in the N time windows. In addition, the jth time window of the N time windows mentioned later refers to a time window in which the time domain positions of the N time windows are arranged at the jth bit, where j is a positive integer less than or equal to N, and will not be described in detail later.
In the embodiment of the present application, the data transmission may be a downlink transmission, for example, the data transmission is an SPS transmission; the data transmission may also be an uplink transmission, e.g. the data transmission is a CG transmission. In the case where the data transmission is a downlink transmission, for the network device, the data transmission between the network device and the terminal device includes: the network equipment waits for sending data to the terminal equipment and sends the data to the terminal equipment; for a terminal device, the data transmission between the network device and the terminal device includes: the terminal device listens for data from the network device and receives the data from the network device. In the case that the data transmission is uplink transmission, for the terminal device, the data transmission between the network device and the terminal device includes: the terminal equipment waits for sending data to the network equipment and sends the data to the network equipment; for a network device, data transmission between the network device and a terminal device includes: the network device listens for data from the terminal device and receives the data from the terminal device.
In SPS transmissions, the network device waits to send data to the terminal device because the network device needs to monitor and receive data from the server before sending the data to the terminal device after receiving the data from the server. In CG transmission, the terminal device waits for data to be transmitted to the network device because the terminal device has a coding processing delay for the data, and the terminal device can transmit the data to the network device after coding is completed.
S102, the terminal equipment determines M time windows for data transmission in N time windows of a first period according to the first information.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window corresponding to the bit is used for data transmission. Wherein, when the data transmission is SPS transmission, the bit map indicated by the first information may be SPS Raster Bitmap; when the data transmission is CG transmission, the bit map indicated by the first information may be CG master Bitmap. Correspondingly, the determining, by the terminal device, M time windows for data transmission in N time windows of the first period according to the first information may include: the terminal device determines M time windows for data transmission from the bit map indicated by the first information.
Alternatively, the value of a bit may use "0" and "1" to characterize whether the time window corresponding to the bit is used for data transmission. For example, when the value of a bit is "1", the time window corresponding to the bit is used for data transmission, and when the value of the bit is "0", the time window corresponding to the bit is not used for data transmission; alternatively, the time window corresponding to the bit is not used for data transmission when the value of the bit is "1", and the time window corresponding to the bit is used for data transmission when the value of the bit is "0". In addition, the value of the bit may also be represented by another representation, for example, when the value of the bit is "true", it indicates that the time window corresponding to the bit is used for data transmission, and when the value of the bit is "false", it indicates that the time window corresponding to the bit is not used for data transmission, which is not limiting. For convenience of explanation, the time window corresponding to the bit is used for data transmission when the value of the bit map is "1", and the time window corresponding to the bit is "0" and is not used for data transmission, which will not be described in detail.
For example, N is equal to 16, and the bit map includes 16 bits, where the 16 bits correspond to 16 time windows of the first period one by one; the 16 bits have values of 0,1,0 1,0,1,0,1, then the bit map is denoted as [0,0,0,1,0,1,0,1,1,1,0,1,0,0,0,1]. It can be seen that, of the 16 time windows, the 4 th, 6 th, 8 th, 9 th, 10 th, 12 th, 16 th time windows are used for data transmission, and the remaining time windows are not used for data transmission.
For another example, N is equal to 8, the bit map includes 4 bits, each of the 4 bits corresponds to two adjacent time windows of the 8 time windows of the first period, specifically, bit #1 corresponds to time window #1 and time window #2, bit #2 corresponds to time window #3 and time window #4, bit #3 corresponds to time window #5 and time window #6, and bit #4 corresponds to time window #7 and time window # 8. The values of bits #1 to #4 are 0,1, respectively, and then the bit map is denoted as [0,0,1,1,0,0,1,1], it can be seen that, among the 8 time windows, the 3 rd, 4 th, 7 th, 8 th time windows are used for data transmission, and the 1 st, 2 nd, 5 th, 6 th time windows are not used for data transmission.
For convenience of explanation, the following description will take an example that each bit in the bit map corresponds to one time window, which will not be repeated.
Alternatively, the bit map indicated by the first information may be determined from a plurality of bit maps defined in advance based on a jitter range of the data and a probability distribution of jitter compliance. The plurality of bitmaps may be predefined for data having different jitter ranges and different probability distributions to which the jitter is subject. The different jitter ranges of the data and different probability distributions obeyed by the jitter may be formed by different service types of the data and different encoding and decoding capacities of the server, and the different service types of the data may be represented as different frame rates of the data, for example, the frame rates may be 30FPS, 60FPS, 120FPS, and the like. The embodiment of the application provides an exemplary table 1, and table 1 characterizes a plurality of predefined bit bitmaps and indexes, M/N and average scheduling delays corresponding to each bit bitmap.
TABLE 1
| Index | M/N | Average scheduling delay (unit: ms) | Bit map |
| 0 | 5/16 | 1.06 | [0,0,0,1,0,0,1,0,1,0,0,1,0,0,0,1] |
| 1 | 6/16 | 0.7939 | [0,0,0,1,0,0,1,0,1,0,1,0,1,0,0,1] |
| 2 | 7/16 | 0.6056 | [0,0,1,0,1,0,1,0,1,0,1,0,1,0,0,1] |
| 3 | 8/16 | 0.5 | [0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1] |
| 4 | 3/8 | 0.1587 | [0,0,0,1,0,0,1,1] |
| 5 | 4/8 | 0.1056 | [0,1,0,1,0,0,1,1] |
| 6 | 5/8 | 0.0534 | [0,1,1,1,0,0,1,1] |
| 7 | 6/8 | 0.0267 | [0,0,0,1,0,0,1,1] |
| 8 | 1/4 | 0.4013 | [0,0,0,1] |
| 9 | 2/4 | 0.3085 | [0,1,0,1] |
| 10 | - | 0 | Each bit has a value of 1 |
When the first period is equal to the jitter range, and the duration of each of the N time windows of the first period is equal to the slot length (the slot length is 0.5 ms), the bit maps respectively corresponding to the index 0 to the index 3 in table 1 are applicable to the data with the jitter range of 8 ms; bit maps corresponding to index 4 to index 7, respectively, can be applied to data with jitter range of 4 ms; bit maps corresponding to index 8 and index 9, respectively, may be applicable to data with a jitter range of 2 ms.
In addition, the first information indication bit map may be indirectly indicated or directly indicated. Wherein, in case that the first information indirectly indicates the bit map, the first information may be an index of the bit map; after the terminal device obtains the index of the bit map, it also needs to determine the bit map corresponding to the index from the predefined multiple bit maps, and then determine M time windows for data transmission according to the bit map corresponding to the index. In case the first information indicates the bit map directly, the first information may be the bit map, that is, the network device may inform the terminal device of the bit map directly, and the terminal device determines M time windows for data transmission directly from the received bit map.
In another alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined. In this embodiment, the position distribution manner of the time windows for data transmission in the N time windows may be predefined, and then, after acquiring the value of M, that is, the total number of time windows for data transmission, the terminal device may determine M time windows for data transmission in the N time windows in the first period according to the predefined position distribution manner.
Optionally, the predefined location distribution manner is: the interval between the start positions of any two adjacent time windows in the M time windows for data transmission is the same and is equal to a first value obtained by rounding up a value obtained by dividing N by M, the first value being expressed as the number of time windows. That is, the positions of the M time windows in the N time windows are uniformly distributed when the value obtained by dividing N by M is an integer, and the positions of the M time windows in the N time windows are approximately uniformly distributed when the value obtained by dividing N by M is a non-integer. In addition, in the case that the M time windows for data transmission include the last time window of the N time windows, the last time window of the N time windows may be determined as the last time window of the M time windows, and then the time window for data transmission located before the last time window may be determined according to a uniformly distributed (or approximately uniformly distributed) position distribution manner based on the last time window.
For example, the first information configures that the value of M is 8, the duration of the first period is 8ms, and the first period can be divided into 16 time windows with the duration of 0.5ms (i.e. the value of N is 16); the 8 time windows for data transmission include the last time window of the 16 time windows, and then according to the uniformly distributed position distribution mode, the first value can be determined to be 2 time windows, namely, the first value is equal to 1ms, then based on the last time window of the 16 time windows, the 8 time windows for data transmission can be determined to include the 2 nd, 4 th, 6 th, 8 th, 10 th, 12 th and 14 th time windows of the 16 time windows besides the last time window of the 16 time windows, and the bit bitmap corresponding to the 8 time windows for data transmission in the 16 time windows can be represented as [0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1].
For another example, the first information configures that the value of M is 3, the duration of the first period is 8ms, and the first period can be divided into 16 time windows with the duration of 0.5ms (i.e. the value of N is 16); the 3 time windows for data transmission include the last time window of the 16 time windows, and then according to the approximately evenly distributed position distribution mode, the first value can be determined to be 6 time windows, namely, the first value is equal to 3ms, then based on the last time window of the 16 time windows, the 3 time windows for data transmission can be determined to include the 4 th time window and the 10 th time window of the 16 time windows besides the last time window of the 16 time windows, and the bit bitmap corresponding to the 3 time windows for data transmission in the 16 time windows can be represented as [0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1].
Optionally, the predefined location distribution manner is: the M time windows for data transmission include consecutive g time windows of f time windows within each of a plurality of second time periods, which are obtained by uniformly dividing the first time period and each of which has a duration equal to x, from a start position of the second time period, and each of the second time periods includes at least two time windows of N time windows of the first time period. Wherein x is a positive number, f is an integer greater than or equal to 0, and g is a positive integer. The values of x, f and g can be sent to the terminal equipment by the network equipment or can be determined by negotiation between the network equipment and the terminal equipment. In addition, in this embodiment, the network device may not configure the value of M, and the first information is used to configure the values of x, f, and g.
For example, in connection with fig. 9, the duration of the first period is 8ms, x is equal to 2ms, f is equal to 2, g is equal to 2, and m is equal to 8; the duration of each of the 16 time windows of the first period (i.e., N equals 16) is equal to 0.5ms. The first period is divided into 4 second periods each having a duration of 2ms, including: the 4 second periods include, in order, a 1 st to 4 th time windows, a 5 th to 8 th time windows, a 9 th to 12 th time windows, and a 13 th to 16 th time windows of 16 th time windows, a second period #1, a second period #2, a second period #3, and a second period # 4. Then, the 8 time windows for data transmission include: the consecutive 2 time windows of 2 time windows within each of the 4 second time periods from the start position of the second time period, that is, the 8 time windows for data transmission include the 3 rd, 4 th, 7 th, 8 th, 11 th, 12 th, 15 th, 16 th time windows of the 16 th time windows, and the bit map corresponding to the 8 th time windows for data transmission in the 16 th time windows may be represented as [0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1], and the time windows represented by gray rectangular boxes in fig. 9 are time windows for data transmission.
In an alternative embodiment, the method further comprises: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. Correspondingly, the terminal device receives fourth information from the network device. The embodiment can enable the terminal equipment to know the duration of the first time period, and is beneficial to the terminal equipment to determine M time windows for data transmission from N time windows of the first time period.
S103, the terminal equipment performs data transmission with the network equipment in Y time windows in M time windows; y is a positive integer less than M.
For example, the data transmission is downstream, M is equal to 8, and the positions of 8 time windows for data transmission among 16 time windows of the first period are as shown in fig. 10, and the time window indicated by a gray rectangular frame in fig. 10 is the time window for data transmission. In fig. 10, 8 time windows for data transmission include: time window #1, time window #4, time window #6, time window #8, time window #9, time window #11, time window #13, and time window #16. For the network device, the network device waits for data to be sent to the terminal device in time window #1, at t 1 The data from the server is received and transmitted to the terminal device in time windows #4, #6, and # 8. For the terminal device, the terminal device listens for data from the network device in time window #1 and receives data from the network device in time windows #4, #6 and # 8. It can be seen that data transmission takes place between the terminal device and the network device in 4 time windows of 8 times for data transmission.
In an alternative embodiment, the method further comprises: the terminal device does not perform data transmission with the network device in M-Y time windows except Y time windows in the M time windows. That is, the network device and the terminal device may release (/ deactivate) resources of M-Y time windows other than Y time windows out of the M time windows. This embodiment may be applied to complete data transmission in Y time windows, and then the remaining M-Y time windows may be used for other uses, such as for other user data transmission, in order to improve the overall throughput of the communication system. For example, in connection with fig. 10, when data transmission is performed between the network device and the terminal device in time windows #1, #4, #6, and #8, the remaining time windows #9, #11, #13, and #16 among the 8 time windows for data transmission may be released.
In addition, the mode does not need to additionally send signaling (such as DCI) to indicate to release the M-Y time windows by the network equipment, so that signaling overhead can be saved. In addition, when the method is applied to XR service or video service, the operation that M-Y time windows in a certain period are released does not affect the activation state of time windows in other periods after the period, and the network equipment does not need to additionally send signaling (such as DCI) to indicate to activate the time windows in other periods after the period, so that signaling cost is saved.
For example, taking an SPS transmission as an example, the SPS period is 16.67ms, in conjunction with fig. 11, parts a, B, and C in fig. 11 respectively show a data distribution situation in the same time domain, an SPS resource distribution situation when 8 SPS are configured and each SPS configures 1 slot as an SPS resource in each period, and an SPS resource distribution situation when M time windows for data transmission are configured by 1 SPS based on the data transmission method provided in the present application. In section B, the SPS resources configured by 8 SPS (SPS #1 to SPS #8 in sequence) are represented by rectangular boxes of 8 different padding patterns, and the SPS resources represented by rectangular boxes of the same padding pattern in different periods are configured by the same SPS. In the part C, the first time period is the jitter range of the data, and the duration of each time window is equal to the time slot length; the figure shows that 8 time windows for data transmission are configured by one SPS in 16 time windows of a first period in each period, namely 8 SPS resources are configured by one SPS in each period; the grey rectangular box represents the activated SPS resources and the white rectangular box represents the released SPS resources. In addition, the solid single arrow downward in fig. 11 indicates that the network device will transmit DCI.
In connection with fig. 11, the SPS resources are configured by 1 SPS in part c, and the network device transmits one DCI for activating all SPS resources corresponding to 1 SPS, signaling overhead can be saved compared with the manner in which 8 SPS are configured in part B such that the network device needs to transmit one DCI for each SPS of the 8 SPS to activate the SPS resources corresponding to each SPS. And at t 3 To t 4 In the part C, the terminal equipment can directly release the remaining last 4 SPS resources in the period when the data transmission is completed, and no network equipment is required to send additional DCI for releasing the SPS resources; compared with the mode in the part B that the network equipment is required to send DCI to instruct the terminal equipment to release SPS resources, the signaling overhead is saved. In addition, in the portion C, the terminal device releases the last 4 SPS resources in the second period without affecting the SPS resources in the subsequent period, that is, the SPS in the subsequent period is still activated, compared to the DCI transmitted in the portion B to release the SPS resources corresponding to sps#4 to sps#8 in the second period, which causes all the SPS resources corresponding to sps#4 to sps#8 in each period to be released, which results in less signaling overhead in the portion C if the network device needs to send one DCI again to activate the SPS resources corresponding to sps#4 to sps#8 to reuse the SPS resources corresponding to sps#4 to sps#8.
Optionally, when the data transmission is SPS transmission, the network device may determine that data transmission is not performed with the terminal device during M-Y time windows when/after the data transmission within the first period is completed. The network device may also send second information to the terminal device, the second information indicating completion of the data transmission within the first period. Correspondingly, the terminal device can determine that data transmission is not performed with the network device in M-Y time windows according to the second information. Optionally, the second information is received by the terminal device in a last time window of the Y time windows. That is, the network device may send the second information to the terminal device in the last time window of the Y time windows to inform the terminal device: the data transmission in the first period is completed, and the terminal device may release the remaining M-Y time windows out of the M time windows. The M-Y time windows may be used for other uses, such as for other user data transmissions, to facilitate improving overall throughput of the communication system.
Alternatively, when the data transmission is CG transmission, the terminal device may determine that data transmission is not performed with the network device during M-Y time windows when/after the data transmission in the first period is completed. The terminal device may also send third information to the network device, the third information indicating completion of the data transmission within the first period. Correspondingly, the network device can determine that data transmission is not performed with the terminal device in M-Y time windows according to the third information. Optionally, the third information is received by the network device in a last time window of the Y time windows. That is, the terminal device may send third information to the network device in the last time window of the Y time windows to inform the network device: the data transmission in the first period is completed, and the network device may release the remaining M-Y time windows of the M time windows. The M-Y time windows may be used for other uses, such as for other user data transmissions, to facilitate improving overall throughput of the communication system.
In addition, when the second information is received by the terminal device in the last time window of the Y time windows and/or the third information is received by the network device in the last time window of the Y time windows, the second information and/or the third information may also be referred to as tail packet information. For example, in SPS transmissions, the second information may be carried in data sent by the network device to the terminal device in the last of the Y time windows, carried by some or all of the reserved bits (e.g., reserved bits in the "R-field") in the control layer control unit (media access control, MAC CE) subheader of the media access control layer control unit (media access controlcontrol element, MAC CE). For example, when 1 reserved bit is set to "1", it is indicated that the MAC CE carries the second information, that is, the data transmission within the first period is completed; when the reserved bit is set to "0", it is indicated that the MAC CE does not carry the second information, that is, the data transmission in the first period has not been completed. For another example, when 1 reserved bit is set to "0", it is indicated that the MAC CE carries the second information; when the reserved bit is set to "1", it is indicated that the MAC CE does not carry the second information. In this way, no new MAC CE needs to be introduced, and no additional indication overhead needs to be introduced. In addition, the third information in CG transmission is similar to the second information in SPS transmission, and the third information may be carried in data sent by the terminal device to the network device in the last time window of the Y time windows, and is carried by part or all of reserved bits (for example, reserved bits in "R domain") in the MAC subheader of the MAC CE, which is not described herein.
In another alternative embodiment, Y may be equal to M, that is, the network device and the terminal device perform data transmission in M time windows. For example, in connection with fig. 12, the data transmission is downstream, M is equal to 8, and the position distribution of M time windows for data transmission in fig. 12 among N time windows for the first period is the same as fig. 10, and the time window indicated by a gray rectangular frame in fig. 12 is the time window for data transmission. For the network device, the network device waits for data to be transmitted to the terminal device in each of time window #1, time window #4, time window #6, time window #8, and time window #9, at t 2 The data from the server is received and transmitted to the terminal device in time windows #11, #13, and # 16. For the terminal device, the terminal device listens to data from the network device in each of time window #1, time window #4, time window #6, time window #8, and time window #9, and receives data from the network device in time window #11, time window #13, and time window # 16. It can be seen that data transmission takes place between the network device and the terminal device in all of the 8 time windows for data transmission.
In summary, in the method, the terminal device receives first information from the network device; according to the first information, the terminal equipment determines M time windows used for data transmission in N time windows of a first period, and performs data transmission with the network equipment in Y time windows in the M time windows; wherein N is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M. In the method, data can be transmitted in a front time window for data transmission when the expected time arrives in advance, and data can be transmitted in a rear time window for data transmission when the expected time arrives after the data delay, so that the data transmission delay is reduced. In addition, M time windows for data transmission in the method can be configured in one SPS/CG, the value of M can be not limited by the number of the configured SPS/CG, namely, the number of the time windows for data transmission can not be limited by the number of the SPS/CG, so that more time windows for data transmission can be configured to cope with the jitter of data when the jitter range of the data is larger, and the time delay of data transmission is reduced. In addition, the manner in which the M time windows for data transmission are configured by one SPS/CG may also reduce signaling overhead for activating the time windows for data transmission.
In the data transmission method provided by the embodiment of the application, the data transmission can be SPS transmission or CG transmission, and the data transmission methods in the two cases of SPS transmission and CG transmission are respectively described below.
Referring to fig. 13, fig. 13 is a schematic diagram of a data transmission method during SPS transmission according to an embodiment of the present application, where the method is illustrated from the point of interaction between a network device and a terminal device, and the method may include the following steps:
s201, the network equipment sends first information to the terminal equipment, wherein the first information is used for configuring M time windows used for data transmission in N time windows of a first period; accordingly, the terminal device receives the first information from the network device.
In an alternative embodiment, the first information is an index of a bit map. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted. Alternatively, the first information may be carried in SPS-Config in RRC signaling. Specifically, an SPS-index field (i.e., SPS-masterindex field) may be added in SPS-Config, which is used to carry the value of the index of the bitmap.
In an alternative embodiment, the first information is a bit map; the method further comprises the steps of: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. Correspondingly, the terminal device receives fourth information from the network device. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
Alternatively, in the case where the first information is a bitmap, the first information and the fourth information may be carried in SPS-Config in RRC signaling. Specifically, an SPS Raster duration field (i.e., SPS-RasterTimer field) and a SPS Raster Bitmap field (i.e., SPS-RasterBitMap field) may be added to the SPS-Config. The sps-RasterTimer field is used to carry a duration of a first period, where the first period may be a jitter range of data. The sps-RasterBitMap field is used to carry a bit map, that is, the sps-RasterBitMap field may be used to characterize whether each of the N time windows of the first period is used for data transmission.
In an alternative embodiment, the first information is used to configure the value of M; the method further comprises the steps of: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. Correspondingly, the terminal device receives fourth information from the network device. In addition, the predefined location distribution manner may be: the locations of the M time windows for data transmission among the N time windows are evenly or approximately evenly distributed. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
Optionally, when the first information is used for configuring the value of M, the first information and the fourth information may be carried in SPS-Config in RRC signaling. Specifically, the SPS-mastertimer field and the SPS number field (i.e., SPS-masternum field) may be added in SPS-Config. The sps-RasterTimer field is used to carry a duration of a first period, where the first period may be a jitter range of data. The sps-RasterNum field is used to carry the value of M, and is also used to indicate that the time windows for data transmission are evenly or approximately evenly distributed during the period of each sps-RasterTimer.
In an alternative embodiment, the first information is used to configure the values of x, f, g; the method further comprises the steps of: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. Correspondingly, the terminal device receives fourth information from the network device. In addition, the predefined location distribution manner may be: the M time windows for data transmission include consecutive g time windows of f time windows within each of a plurality of second time periods, which are obtained by uniformly dividing the first time period and each of which has a duration equal to x, from a start position of the second time period, and each of the second time periods includes at least two time windows of N time windows of the first time period. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
Optionally, when the first information is used to configure the values of x, f, and g, the first information and the fourth information may be carried in SPS configuration (SPS-Config) in RRC signaling. Specifically, the SPS-sterimer field, the SPS-sterimer period field (i.e., SPS-stericle field), the SPS-sterimer period-consecutive slot field (i.e., SPS-stericle-nrofSlots field), and the SPS-sterimer period-slot offset field (i.e., SPS-stericle-Slotoffset field) may be added in the SPS-Config.
The sps-RasterTimer field is used to carry a duration of a first period, where the first period may be a jitter range of data. The sps-RasterCycle field is used to carry the value of x, and can also be said to be the sps-RasterCycle field is used to characterize the cyclic period in the range of sps-RasterTimer. The sps-Rastercycle-nrofSlots field is used to carry the value of g, that is, the sps-Rastercycle-nrofSlots field characterizes the number of consecutive time windows for data transmission in each cycle period in the range of sps-Rastertimer. The sps-RasterCycle-Slotoffset field is used to carry the value of f, and it can be said that the sps-RasterCycle-Slotoffset field characterizes the offset of the start position of the 1 st time window for data transmission in each cycle period in the scope of the sps-RasterTimer relative to the start position of the cycle period.
S202, the terminal equipment determines M time windows for data transmission in N time windows of a first period according to the first information. For a network device, the data transmission includes waiting to send data to a terminal device and sending data to the terminal device; for a terminal device, data transmission includes listening for data from a network device and receiving data from the network device.
S203, the network device waits for data transmission to the terminal device and data transmission to the terminal device in Y time windows in M time windows, wherein Y is a positive integer smaller than M. Correspondingly, S204, the terminal device listens for data from the network device in Y time windows among the M time windows and receives data from the network device.
In an alternative embodiment, the method may further comprise: the network device releases M-Y time windows other than Y time windows out of the M time windows upon/after completion of the data transmission in the first period. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
In an alternative embodiment, the method may further comprise: the network equipment sends second information to the terminal equipment in the last time window in the Y time windows, wherein the second information is used for indicating the completion of data transmission in the first time period; the specific explanation of releasing the M-Y time windows except the Y time windows in the M time windows according to the received second information by the terminal device can be referred to the related explanation in the data transmission method shown in fig. 8, and is not repeated.
The method and the device have the advantages that the sequence of the operation of releasing M-Y time windows by the network device and the operation of sending the second information to the terminal device by the network device is not limited.
In addition, the data transmission method during SPS transmission may further include an embodiment of the data transmission method shown in fig. 8, which has corresponding beneficial effects, and will not be described again.
In summary, in SPS transmission, M time windows for data transmission may be configured by one SPS, where the value of M may not be limited by the number of SPS configured, and when the jitter range of data is larger, more time windows for data transmission may be configured to cope with the jitter of data, which is favorable for reducing the delay of transmitting data, and reducing the signaling overhead for activating the time windows for data transmission.
Referring to fig. 14, fig. 14 is a schematic diagram of a data transmission method during CG transmission according to an embodiment of the present application, where the method is illustrated from the perspective of interaction between a network device and a terminal device, the method may include the following steps:
s301, the network equipment sends first information to the terminal equipment, wherein the first information is used for configuring M time windows used for data transmission in N time windows of a first period; accordingly, the terminal device receives the first information from the network device.
In an alternative embodiment, the first information is an index of a bit map. Alternatively, the first information may be carried in CG-Config in RRC signaling. Specifically, a CG-separator index field (i.e., CG-separator index field) may be added in CG-Config, which is used to carry the value of the index of the bitmap.
In an alternative embodiment, the first information is a bit map; the method may further comprise: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. Correspondingly, the terminal device receives fourth information from the network device.
Alternatively, in the case where the first information is a bitmap, the first information and the second information may be carried in CG-Config in RRC signaling. Specifically, a CG-ster duration field (i.e., CG-stertimer field) and a CG-ster Bitmap field (i.e., CG-sterbitmap field) may be added to CG-Config. The cg-RasterTimer field is used to carry a duration of a first period, where the first period may be a jitter range of data. The cg-RasterBitMap field is used to carry a bit map, that is, the cg-RasterBitMap field may be used to characterize whether each of the N time windows of the first period is used for data transmission.
In an alternative embodiment, the first information is used to configure the value of M; the method may further comprise: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. Correspondingly, the terminal device receives fourth information from the network device. In addition, the predefined location distribution manner may be: the locations of the M time windows for data transmission among the N time windows are evenly or approximately evenly distributed. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
Optionally, when the first information is used for configuring the value of M, the first information and the fourth information may be carried in CG-Config in RRC signaling. Specifically, CG-RasterTimer field and CG-number of Raster field (i.e., CG-RasterNum field) may be added in CG-Config. The cg-RasterTimer field is used to carry a duration of a first period, where the first period may be a jitter range of data. The cg-RasterNum field may be used to carry the value of M, and also to indicate that the time window for data transmission is evenly or approximately evenly distributed during the period of each cg-RasterTimer.
In an alternative embodiment, the first information is used to configure the values of x, f, g; the method may further comprise: the network device sends fourth information to the terminal device, wherein the fourth information is used for configuring the duration of the first period. Correspondingly, the terminal device receives fourth information from the network device. In addition, the predefined location distribution manner may be: the M time windows for data transmission include consecutive g time windows of f time windows within each of a plurality of second time periods, which are obtained by uniformly dividing the first time period and each of which has a duration equal to x, from a start position of the second time period, and each of the second time periods includes at least two time windows of N time windows of the first time period. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
Optionally, when the first information is used for configuring the values of x, f, and g, the first information and the fourth information may be carried in CG configuration (CG-Config) in RRC signaling. Specifically, CG-sterimer field, CG-sterimer period field (i.e., CG-stericle field), CG-sterimer period-consecutive slot field (i.e., CG-stericle-nrofSlots field), and CG-sterimer period-slot offset field (i.e., CG-stericle-slot offset field) may be added in CG-Config.
The cg-RasterTimer field is used to carry a duration of a first period, where the first period may be a jitter range of data. The cg-RasterCycle field is used to carry the value of x, and it can also be said that the cg-RasterCycle field is used to characterize the cyclic period in the range of cg-RasterTimer. The cg-RasterCycle-nrofSlots field is used to carry the value of g, that is, the cg-RasterCycle-nrofSlots field characterizes the number of consecutive time windows for data transmission in each cycle period in the cg-RasterTimer range. The cg-RasterCycle-Slotoffset field is used to carry the value of f, and it can also be said that the cg-RasterCycle-Slotoffset field characterizes the offset of the start position of the 1 st time window for data transmission in each cycle period in the range of cg-RasterTimer relative to the start position of the cycle period.
In addition, in the case where the first information is carried in CG-Config, or both the first information and the fourth information are carried in CG-Config, a CG continuous slot field (i.e., CG-nrofSlots field) in CG-Config may not be valid, and the CG-nrofSlots field is used to indicate the number of continuous slots used for data transmission.
S302, the terminal equipment determines M time windows for data transmission in N time windows of a first period according to the first information. For a terminal device, the data transmission includes waiting to send data to a network device and sending data to the terminal device; for a network device, data transmission includes listening for data from a terminal device and receiving data from the terminal device.
S303, the terminal equipment waits for sending data to the network equipment and sending data to the network equipment in Y time windows in M time windows, wherein Y is a positive integer smaller than M. Correspondingly, the network device listens for data from the terminal device and receives data from the terminal device in Y time windows of the M time windows S304.
In an alternative embodiment, the method may further comprise: the terminal device releases M-Y time windows other than Y time windows among the M time windows at the completion/after the data transmission in the first period. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
In an alternative embodiment, the method may further comprise: the terminal equipment sends third information to the network equipment in the last time window in the Y time windows, wherein the third information is used for indicating the completion of data transmission in the first period; and the network equipment releases M-Y time windows except Y time windows in the M time windows according to the received third information. The specific description can be referred to the related description in the data transmission method shown in fig. 8, and the detailed description is omitted.
The method and the device have the advantages that the sequence of the operation of releasing M-Y time windows by the terminal device and the operation of sending the second information to the network device by the terminal device is not limited.
In addition, the data transmission method during CG transmission may further include other embodiments of the data transmission method shown in fig. 8, which also has corresponding beneficial effects, and will not be described herein.
In summary, in CG transmission, M time windows for data transmission may be configured by one CG, where the value of M may not be limited by the number of CG configured, and when the jitter range of data is larger, more time windows for data transmission may be configured to cope with the jitter of data, which is favorable for reducing the delay of transmitting data, and reducing the signaling overhead for activating the time windows for data transmission.
In addition, the embodiment of the application also provides a method similar to the data transmission method shown in fig. 8 for the signaling scenario, where the difference is that, in the signaling scenario, the first information is used to configure M time windows for signaling in N time windows of the first period. The method can be used for configuring a plurality of time windows for signal transmission in a first period, and when a signal arrives in advance of an expected time, the terminal equipment can receive or send the signal in the previous time window for signal transmission; when the signal arrives after the expected time, the terminal device can receive or send the signal in a later time window for signal transmission, which is beneficial to reducing the time delay of the transmitted signal.
Specifically, the network device may send first information to the terminal device; the first information is used to configure M time windows for signal transmission among N time windows of the first period. The terminal equipment receives first information from the network equipment; according to the first information, M time windows used for signal transmission are determined in N time windows of a first period, and signal transmission is carried out between Y time windows in the M time windows and the network equipment; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M. Wherein the signal may be a Wake Up Signal (WUS), the first period may be a listening range of WUS, and the M time windows for signal transmission may be determined from the N time windows according to a probability distribution of jitter compliance of WUS.
In an alternative embodiment, the method further comprises: the terminal device does not perform signal transmission with the network device in M-Y time windows except Y time windows in the M time windows. In an alternative mode, the signal transmission is downlink transmission; the terminal device does not perform signal transmission with the network device in M-Y time windows, and the method comprises the following steps: the terminal equipment determines that signal transmission is not carried out with the network equipment in M-Y time windows according to the second information; the second information is used to indicate completion of signal transmission within the first period. Optionally, the second information is received in a last time window of the Y time windows. In an alternative, the signal transmission is an uplink transmission; the method further comprises the steps of: the terminal device transmits third information to the network device in the last time window of the Y time windows, wherein the third information is used for indicating the completion of signal transmission in the first time period.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window corresponding to the bit is used for signal transmission. In another alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined.
In an alternative embodiment, the method further comprises: fourth information is received from the network device, the fourth information being used to configure a duration of the first period.
In an alternative embodiment, the M time windows include a last time window of the N time windows.
In order to implement the functions in the methods provided in the embodiments of the present application, the network device or the terminal device may include a hardware structure and/or a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.
As shown in fig. 15, an embodiment of the present application provides a communication apparatus 1500. The communications apparatus 1500 can be a component of a network device (e.g., an integrated circuit, a chip, etc.) or a component of a terminal device (e.g., an integrated circuit, a chip, etc.). The communication device 1500 may also be other communication units for implementing the method in the method embodiments of the present application. The communication apparatus 1500 may include: a communication unit 1501 and a processing unit 1502. The processing unit 1502 is configured to control the communication unit 1501 to perform data/signaling. Optionally, the communication device 1500 may further comprise a storage unit 1503.
In one possible design, the communication unit 1501 is configured to receive first information from a network device; the processing unit 1502 is configured to determine, according to the first information, M time windows for data transmission among N time windows in a first period, and perform data transmission with the network device in Y time windows among the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In an alternative embodiment, the processing unit 1502 is further configured to not perform data transmission with the network device in M-Y time windows except for Y time windows.
In an alternative embodiment, the data transmission is a semi-persistent scheduling CG transmission. The processing unit 1502 does not perform data transmission with the network device in M-Y time windows, and is specifically configured to: according to the second information, determining that data transmission is not carried out with the network equipment in M-Y time windows; the second information is used to indicate completion of the data transmission within the first period.
In an alternative embodiment, the second information is received in the last time window of the Y time windows.
In an alternative embodiment, the data transfer is a configuration grant CG transfer. The communication unit 1501 is further configured to transmit third information to the network device in a last time window of the Y time windows, the third information indicating completion of the data transmission in the first period.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window to which the bit corresponds is used for data transmission.
In an alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined.
In an alternative embodiment, the communication unit 1501 is further configured to receive fourth information from the network device, the fourth information being configured to be the duration of the first period.
In an alternative embodiment, the M time windows include a last time window of the N time windows.
In another possible design, the communication unit 1501 is configured to send the first information to the terminal device; the first information is used to configure M time windows for data transmission among N time windows of the first period. The processing unit 1502 is configured to perform data transmission with the terminal device in Y time windows of the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In an alternative embodiment, the processing unit 1502 is further configured to not perform data transmission with the terminal device in M-Y time windows except for Y time windows.
In an alternative embodiment, the data transmission is a semi-persistent scheduling CG transmission. The communication unit 1501 is further configured to transmit second information to the terminal device in a last time window of the Y time windows, the second information indicating completion of the data transmission in the first period.
In an alternative embodiment, the data transfer is a configuration grant CG transfer; the processing unit 1502 does not perform data transmission with the terminal device in M-Y time windows, and is specifically configured to: according to the third information, determining that data transmission is not carried out with the terminal equipment in M-Y time windows; the third information is used to indicate completion of the data transmission within the first period.
In an alternative embodiment, the third information is received in the last time window of the Y time windows.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window to which the bit corresponds is used for data transmission.
In an alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined.
In an alternative embodiment, the communication unit 1501 is further configured to send fourth information to the terminal device, where the fourth information is used to configure the duration of the first period.
In an alternative embodiment, the M time windows include a last time window of the N time windows.
The embodiments of the present application and the embodiments of the above-mentioned method are based on the same concept, and the technical effects brought by the embodiments are the same, and the specific principles refer to the description of the above-mentioned embodiments, and are not repeated.
The embodiment of the application also provides a communication device 1600, as shown in fig. 16. The communication device 1600 may be a network device or a terminal device, a chip system, a processor or the like for supporting the network device to implement the above method, or a chip, a chip system, a processor or the like for supporting the terminal device to implement the above method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.
The communications device 1600 may include one or more processors 1601. The processor may be configured to implement some or all of the functions of the network device or the terminal device described above by logic circuits or running a computer program. The processor 1601 may be a general purpose processor or a special purpose processor, or the like. For example, it may be a baseband processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or a central processing unit (Central Processing Unit, CPU). The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute software programs, and process data of the software programs.
Optionally, the communication device 1600 may include one or more memories 1602 on which instructions 1604 may be stored, which instructions may be executed on the processor 1601, to cause the communication device 1600 to perform the methods described in the method embodiments above. Optionally, the memory 1602 may also have data stored therein. The processor 1601 and the memory 1602 may be provided separately or may be integrated.
The memory 1602 may include, but is not limited to, nonvolatile memory such as Hard Disk Drive (HDD) or Solid State Drive (SSD), random access memory (random access memory, RAM), erasable programmable read-only memory (erasable programmable ROM, EPROM), ROM, or portable read-only memory (compact disc read-only memory), and the like.
Optionally, the communication device 1600 may also include a transceiver 1605, an antenna 1606. The transceiver 1605 may be referred to as a transceiver unit, transceiver circuitry, or the like, for implementing a transceiver function. The transceiver 1605 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.
In one possible design, the communication device 1600 is a terminal device case: the transceiver 1605 is for receiving first information from a network device. The processor 1601 is configured to determine M time windows for data transmission among N time windows in a first period according to the first information, and perform data transmission with the network device in Y time windows among the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In an alternative embodiment, processor 1601 is further configured to not transmit data with the network device for M-Y time windows other than Y time windows in the M time windows.
In an alternative embodiment, the data transmission is a semi-persistent scheduling CG transmission. The processor 1601 does not perform data transmission with the network device during M-Y time windows, and is specifically configured to: according to the second information, determining that data transmission is not carried out with the network equipment in M-Y time windows; the second information is used to indicate completion of the data transmission within the first period.
In an alternative embodiment, the second information is received in the last time window of the Y time windows.
In an alternative embodiment, the data transfer is a configuration grant CG transfer. The transceiver 1605 is further configured to transmit third information to the network device in a last time window of the Y time windows, the third information being used to indicate completion of the data transmission within the first period.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window to which the bit corresponds is used for data transmission.
In an alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined.
In an alternative embodiment, transceiver 1605 is also configured to receive fourth information from the network device, the fourth information being used to configure the duration of the first time period.
In an alternative embodiment, the M time windows include a last time window of the N time windows.
In another possible design, the communication apparatus 1600 is a network device case: the transceiver 1605 is used for sending the first information to the terminal equipment; the first information is used to configure M time windows for data transmission among N time windows of the first period. The processor 1601 is configured to perform data transmission with the terminal device in Y time windows of the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In an alternative embodiment, the processor 1601 is further configured to not perform data transmission with the terminal device in M-Y time windows other than Y time windows.
In an alternative embodiment, the data transmission is a semi-persistent scheduling CG transmission. The transceiver 1605 is further configured to transmit second information to the terminal device in a last time window of the Y time windows, the second information being used to indicate completion of the data transmission within the first period.
In an alternative embodiment, the data transfer is a configuration grant CG transfer; the processor 1601 does not perform data transmission with the terminal device in M-Y time windows, and is specifically configured to: according to the third information, determining that data transmission is not carried out with the terminal equipment in M-Y time windows; the third information is used to indicate completion of the data transmission within the first period.
In an alternative embodiment, the third information is received in the last time window of the Y time windows.
In an alternative embodiment, the first information is used to indicate a bitmap of bits; each bit in the bit map corresponds to at least one of the N time windows, and the value of each bit is used to characterize whether the time window to which the bit corresponds is used for data transmission.
In an alternative embodiment, the first information is used to configure the value of M; the locations of the M time windows in the N time windows are predefined.
In an alternative embodiment, the transceiver 1605 is further configured to send fourth information to the terminal device, the fourth information being used to configure the duration of the first time period.
In an alternative embodiment, the M time windows include a last time window of the N time windows.
In another possible design, a transceiver for implementing the receive and transmit functions may be included in processor 1601. For example, the transceiver may be a transceiver circuit, or a communication interface, or an interface circuit. The transceiver circuitry, communication interface or interface circuitry for implementing the receive and transmit functions may be separate or integrated. The transceiver circuit, communication interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, communication interface or interface circuit may be used for transmitting or transferring signals.
In yet another possible design, the processor 1601 may have instructions 1603 stored thereon, where the instructions 1603 run on the processor 1601, to cause the communication device 1600 to perform the method described in the method embodiments above. Instructions 1603 may be solidified in processor 1601, in which case processor 1601 may be implemented by hardware.
In yet another possible design, communication device 1600 may include circuitry that may perform the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in embodiments of the present application may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits (radio frequency integrated circuit, RFIC), mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronics, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
The communication apparatus described in the above embodiment may be a network device or a terminal device, but the scope of the communication apparatus described in the embodiment of the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 16. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:
(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;
(2) A set of one or more ICs, optionally including storage means for storing data, instructions;
(3) An ASIC, such as a modem;
(4) Modules that may be embedded within other devices;
(5) Receivers, terminals, smart terminals, cellular telephones, wireless devices, handsets, mobile units, vehicle devices, network devices, cloud devices, artificial intelligence devices, etc.;
(6) Others, and so on.
For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in fig. 17. Chip 1700 shown in FIG. 17 includes a processor 1701 and a communication interface 1702. Wherein the number of processors 1701 may be one or more, and the number of communication interfaces 1702 may be a plurality. The processor 1701 may be a logic circuit, and the communication interface 1702 may be an input-output interface, an input interface, or an output interface. The chip 1700 may also include a memory 1703.
In one design, for the case where the chip is used to implement the functions of the terminal device in the embodiments of the present application:
the communication interface 1702 is for receiving first information from a network device. The processor 1701 is configured to determine M time windows for data transmission among N time windows in a first period according to the first information, and perform data transmission with the network device in Y time windows among the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
In another design, for the case where the chip is used to implement the functions of the network device in the embodiments of the present application:
the communication interface 1702 is configured to send first information to a terminal device; the first information is used to configure M time windows for data transmission among N time windows of the first period. The processor 1701 is configured to perform data transmission with the terminal device in Y time windows of the M time windows; n is an integer greater than 1, M is a positive integer less than N, and Y is a positive integer less than M.
The communication device 1600 and the chip 1700 in the embodiment of the present application may also perform the implementation manner described in the communication device 1500. Those of skill would further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments herein may be implemented as electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.
The embodiments of the present application and the data transmission method are based on the same concept, and the technical effects brought by the same concept are the same, and the specific principle is referred to the description in the data transmission method and is not repeated.
Those of skill would further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments herein may be implemented as electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.
The present application also provides a computer readable storage medium storing computer software instructions which, when executed by a communications device, implement the functions of any of the method embodiments described above.
The present application also provides a computer program product for storing computer software instructions which, when executed by a communications device, implement the functions of any of the method embodiments described above.
The present application also provides a computer program which, when run on a computer, implements the functions of any of the method embodiments described above.
The application also provides a communication system comprising at least one network device, at least one terminal device of the above aspect. In another possible design, the system may further include other devices that interact with the network device and the terminal device in the solution provided in the present application.
In the above embodiments, the implementation may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., SSD), etc.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships.
In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein A, B may be singular or plural. In the text description of the present application, the character "/", generally indicates that the associated object is an or relationship; in the formulas of the present application, the character "/" indicates that the front and rear associated objects are a "division" relationship.
It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic.
Claims (22)
1. A method of data transmission, the method comprising:
receiving first information from a network device;
according to the first information, M time windows used for data transmission are determined in N time windows of a first period, and the data transmission is carried out between Y time windows in the M time windows and the network equipment; the N is an integer greater than 1, the M is a positive integer less than the N, and the Y is a positive integer less than the M.
2. The method according to claim 1, wherein the method further comprises:
and the M-Y time windows except the Y time windows are not used for carrying out the data transmission with the network equipment.
3. The method of claim 2, wherein the data transmission is a semi-persistent scheduling, SPS, transmission;
said not transmitting said data with said network device during said M-Y time windows, comprising:
Determining that the data transmission is not performed with the network equipment in the M-Y time windows according to second information; the second information is used to indicate completion of the data transmission within the first period.
4. The method of claim 3, wherein the step of,
the second information is received in a last time window of the Y time windows.
5. The method according to claim 1 or 2, wherein the data transmission is a configuration grant CG transmission; the method further comprises the steps of:
and transmitting third information to the network device in the last time window in the Y time windows, wherein the third information is used for indicating the completion of the data transmission in the first period.
6. The method according to any one of claim 1 to 5, wherein,
the first information is used for indicating a bit map;
each bit in the bit map corresponds to at least one time window in the N time windows, and the value of each bit is used for representing whether the time window corresponding to the bit is used for the data transmission.
7. The method according to any one of claim 1 to 5, wherein,
the first information is used for configuring the value of M;
The locations of the M time windows in the N time windows are predefined.
8. The method according to any one of claims 1 to 7, further comprising:
fourth information from the network device is received, the fourth information being used to configure a duration of the first period.
9. The method of any one of claims 1 to 8, wherein the M time windows comprise a last time window of the N time windows.
10. A method of data transmission, the method comprising:
sending first information to terminal equipment; the first information is used for configuring M time windows used for data transmission in N time windows of a first period;
carrying out the data transmission with the terminal equipment in Y time windows in the M time windows; the N is an integer greater than 1, the M is a positive integer less than the N, and the Y is a positive integer less than the M.
11. The method according to claim 10, wherein the method further comprises:
and the M-Y time windows except the Y time windows in the M time windows do not carry out the data transmission with the terminal equipment.
12. The method according to claim 10 or 11, wherein the data transmission is a semi-persistent scheduling, SPS, transmission; the method further comprises the steps of:
and transmitting second information to the terminal equipment in the last time window in the Y time windows, wherein the second information is used for indicating the completion of the data transmission in the first period.
13. The method of claim 11, wherein the data transmission is a configuration grant CG transmission;
the step of not carrying out the data transmission with the terminal equipment in the M-Y time windows comprises the following steps:
according to the third information, determining that the data transmission is not carried out with the terminal equipment in the M-Y time windows; the third information is used to indicate completion of the data transmission within the first period.
14. The method of claim 13, wherein the step of determining the position of the probe is performed,
the third information is received in a last time window of the Y time windows.
15. The method according to any one of claims 10 to 14, wherein,
the first information is used for indicating a bit map;
each bit in the bit map corresponds to at least one time window in the N time windows, and the value of each bit is used for representing whether the time window corresponding to the bit is used for the data transmission.
16. The method according to any one of claims 10 to 14, wherein,
the first information is used for configuring the value of M;
the locations of the M time windows in the N time windows are predefined.
17. The method according to any one of claims 10 to 16, further comprising:
and sending fourth information to the terminal equipment, wherein the fourth information is used for configuring the duration of the first period.
18. The method of any one of claims 10 to 17, wherein the M time windows comprise a last time window of the N time windows.
19. A communication device, characterized in that it comprises means or units for implementing the method of any one of claims 1 to 9, or means or units for implementing the method of any one of claims 10 to 18.
20. A communications device comprising a processor coupled to a memory for storing a program or instructions which, when executed by the processor, cause the device to perform the method of any one of claims 1 to 9 or cause the device to perform the method of any one of claims 10 to 18.
21. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when run, implements the method of any one of claims 1 to 9 or implements the method of any one of claims 10 to 18.
22. A computer program product, the computer program product comprising: computer program code which, when executed, implements the method according to any of claims 1 to 9 or implements the method according to any of claims 10 to 18.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211200149.5A CN117835437A (en) | 2022-09-29 | 2022-09-29 | Data transmission method and device |
| PCT/CN2023/118263 WO2024067064A1 (en) | 2022-09-29 | 2023-09-12 | Data transmission method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211200149.5A CN117835437A (en) | 2022-09-29 | 2022-09-29 | Data transmission method and device |
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| Publication Number | Publication Date |
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| CN117835437A true CN117835437A (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211200149.5A Pending CN117835437A (en) | 2022-09-29 | 2022-09-29 | Data transmission method and device |
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| Country | Link |
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| CN (1) | CN117835437A (en) |
| WO (1) | WO2024067064A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164501A1 (en) * | 2019-02-14 | 2020-08-20 | JRD Communication (Shenzhen) Ltd. | Tsn support |
| CN111865830B (en) * | 2019-04-29 | 2022-04-22 | 华为技术有限公司 | Processing method, device and system for time delay sensitive network service TSN |
| WO2022082738A1 (en) * | 2020-10-23 | 2022-04-28 | Apple Inc. | Methods and apparatus for support of data transmission traffic with non-integer periodicity in wireless communication |
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- 2022-09-29 CN CN202211200149.5A patent/CN117835437A/en active Pending
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| WO2024067064A1 (en) | 2024-04-04 |
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